const path = require('path')
const escape = require('escape-string-regexp')
const { getDefaultConfig } = require('@expo/metro-config')
const exclusionList = require('metro-config/src/defaults/exclusionList')
const pak = require('../package.json')

const root = path.resolve(__dirname, '..')

const modules = Object.keys({
  ...pak.peerDependencies,
})

const defaultConfig = getDefaultConfig(__dirname)

module.exports = {
  ...defaultConfig,

  projectRoot: __dirname,
  watchFolders: [root],

  // We need to make sure that only one version is loaded for peerDependencies
  // So we block them at the root, and alias them to the versions in example's node_modules
  resolver: {
    ...defaultConfig.resolver,

    blacklistRE: exclusionList(
      modules.map((m) => new RegExp(`^${escape(path.join(root, 'node_modules', m))}\\/.*$`)),
    ),

    extraNodeModules: modules.reduce((acc, name) => {
      acc[name] = path.join(__dirname, 'node_modules', name)
      return acc
    }, {}),
  },
}
